Alkalinity as Calcium Carbonate

Clindamycin hydrochloride,100 µg/mL,MeOH,1mL,

1,2,4-Trichlorobenzene, 1000µg/ml in MeOH, 1ml

2,4'-DDE-d8 (dichloropropyl-d4), 100µg/mL in AL, 1ml